Employee Benefit Plans (Components of Net Periodic Benefit Cost) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 28, 2012	Jul. 30, 2011	Jul. 28, 2012	Jul. 30, 2011
Components of Net Periodic Benefit Cost [Abstract]
Interest cost	$ 1,311	$ 1,560	$ 2,620	$ 3,260
Expected return on plan assets	(1,758)	(1,906)	(3,481)	(4,006)
Amortization of net loss	689	548	1,415	1,127
Net periodic benefit cost	$ 242	$ 202	$ 554	$ 381